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Science Experiments

Experiments often conducted by students to test different scientific theories and hypotheses

11,111 Questions

How did Benjamin Thompson's experiment disprove the caloric theory?

Benjamin Thompson's experiment, where he showed that metal can be melted by friction produced by boring a cannon, disproved the caloric theory by demonstrating that heat could be produced by mechanical work rather than through the transfer of a mysterious fluid called caloric. This experiment challenged the prevailing understanding of heat as a fluid and supported the emerging kinetic theory of heat.

The scientific method used in the discovery of vitamin c?

  • observation
  • identifying of the problem
  • formation of hypothesis
  • testing hypothesis
  • come to a conclusion

Do dominoes fall faster closer or father apart and why?

There is an optimal distance at which space dominoes fall the fastest. When a domino is tipped on it's side, the greater the angle of incline, the greater the acceleration. However, it takes more time for the domino to get to a greater angle of incline.

When the dominoes are closer, the dominoes impact each other at a higher spot, leading to more rotational momentum.

The exact optimal distance, depends various factors including the friction between the dominoes and the floor.

How is a mixture of cornstarch and water similar to the earth's mantle How is it different How might the plasticity of the mantle influence the movement of the earth's lithospheric plates?

Both the mixture of cornstarch and water and the Earth's mantle exhibit a semi-fluid behavior known as plasticity, allowing for flow over time. However, the mantle is composed of solid rock material whereas the cornstarch-water mixture is composed of two distinct phases. The plasticity of the mantle influences the movement of Earth's lithospheric plates by allowing them to slide and interact with each other along plate boundaries due to the mantle's ability to deform and flow.

What is the price of fibreglass per square meter?

The price of fiberglass can vary depending on the quality and thickness of the material. On average, you can expect to pay between $10 to $20 per square meter for fiberglass sheets. It is best to check with local suppliers for the most accurate pricing in your area.

Why does water pass through pebbles but not through the clay surface?

Water passes through pebbles because they have larger gaps between them, allowing water to flow through. Clay, on the other hand, has smaller gaps between its particles, making it less permeable to water. This results in water being unable to pass through the clay surface easily.

What marker brand will bleed through the paper the least?

Generally, alcohol-based markers tend to bleed less through paper compared to water-based markers. Brands like Copic, Prismacolor, and Touch Twin markers are known for providing good coverage with minimal bleed-through. However, it's always a good idea to test different markers on the specific type of paper you'll be using to see which brand works best for your needs.

What do scientists hope to discover through use of the Mars Reconnaissance Orbiter?

The intention is not to discover with it, but to support planet side rovers. The orbiter puts a camera in close proximity to the surface of Mars, relative to a camera taking pictures from earth.

It also places a powerful transmitter in close proximity to the planet, which allows all the rover missions it supports to have smaller, lighter transmitters built into them. This decrease in payload demand allows them more options on thier rovers; send slightly cheaper rovers, or more capabile ones for the same price as previous generations.

Does copper get hotter than silver?

No, silver has a higher thermal conductivity than copper, which means it can dissipate heat more effectively. Therefore, copper typically reaches higher temperatures than silver when exposed to the same heat source.

Name 5 different types of sea defenses?

  1. Seawalls: Structures designed to protect coastal areas from wave action and erosion.
  2. Groynes: Wooden or concrete barriers built perpendicular to the shoreline to trap sand and prevent longshore drift.
  3. Breakwaters: Offshore structures built to reduce the intensity of wave action and protect coastal areas.
  4. Revetments: Sloping structures made of rocks or concrete placed along the shoreline to absorb wave energy and prevent erosion.
  5. Gabions: Wire mesh baskets filled with rocks or materials used to stabilize shorelines and reduce erosion.

When Rutherford performed his metal foil experiment did the alpha particles pass straight through the foil or bounce back?

In Rutherford's metal foil experiment, some alpha particles passed straight through the foil, while others were deflected at various angles. A small fraction of the alpha particles even bounced back towards the source. This led Rutherford to conclude that atoms have a small, dense nucleus at their center.

What does metaphase mean?

Metaphase is a stage in mitosis or meiosis where chromosomes align along the equatorial plane of the cell. This alignment ensures that each daughter cell will receive the correct number of chromosomes during cell division.

How do you use discover in a sentence?

The word discover is a verb so you may use it in a sentence like this: Amerigo Vespucci was the first explorer to navigate and discover the coastal areas of the Americas without thinking that it was India.

How many watts in a solar panel?

The power output of a solar panel is typically measured in watts peak (Wp) or kilowatts peak (kWp). For a typical residential solar panel, the power output can range from around 250 watts to 400 watts per panel. Commercial or utility-scale solar panels can have higher power outputs reaching up to 500 watts or more per panel.

Is bleach a bases?

Yes, bleach is a basic substance. It has a high pH level, typically between 11 and 13, which indicates its alkaline nature.

Is a rainbow a solid a liquid or a gas?

A rainbow is neither a solid, liquid, nor gas. It is an optical and meteorological phenomenon that occurs when sunlight is refracted, reflected, and dispersed in water droplets in the atmosphere, creating a spectrum of colors in the sky.

What kinds of materials can electricity not pass through?

Electricity cannot pass through materials that are insulators, such as rubber, paper, and plastic. These materials have high resistance and do not allow the flow of electrons easily.

Does sand dissolve in Ethanol?

No, sand does not dissolve in ethanol. Sand is mainly composed of silicon dioxide, which is insoluble in ethanol.

What are the five forces that you use?

Forces are derived from the first derivative of energy. The five forces are:

F=[d/dr,del][Es,Ev] = [dEs/dr -Del.Ev, dEv/dr + Del Es + DelxEv].

There are two scalar forces and three vector forces as shown above. Forces and energy are quaternions, consisting of a scalar and three vectors.

What is used to convert between the distance on the map and the actual distance in real like on a planimetric map?

A scale bar is used to convert between the distance on the map and the actual distance in real life on a planimetric map. It provides a visual representation of the relationship between the distances on the map and the corresponding real-world distances.

What is a sequence of precisely stated steps that describe how an experiment is done using the appropriate materials called?

A sequence of precisely stated steps that describe how an experiment is done using the appropriate materials is called a protocol. It outlines the procedures, materials, and techniques required to conduct the experiment in a reproducible manner. Following a protocol ensures consistency and accuracy in scientific research.

When light rays enter a medium at an angle they?

undergo refraction, where the speed and direction of the light rays change due to the change in the medium's optical density. This bending of light rays is due to a change in the velocity of light as it travels from one medium to another.

Why male baby is larger than female baby?

Male babies are typically larger than female babies due to genetic and hormonal differences. Testosterone, a male sex hormone, leads to increased growth and muscle mass in males. Additionally, male infants tend to have a higher birth weight on average compared to females.

What are the ways in which water evaporate?

Evaporation, per se, is the heat transference from one place to another. If you have a surface that is constantly any given temperature then to effect a change upon that surface is to induce evaporation. Heat does not have to be just a gas or a solid, heat can take many forms; sometimes latent forms that put off not heat signature at all but still contain the force within to be used.

If one wanted to cool an object one would use the principals of refrigeration to systematically cool the desired object.

What are some examples of objects that have very low inertia while at rest?

Some examples of objects with very low inertia while at rest are small particles like dust or smoke suspended in air, as well as very lightweight objects such as a feather or a sheet of paper. These objects have very little resistance to changes in their state of motion when at rest.